diff --git a/includes/Admin/Admin.php b/includes/Admin/Admin.php
index 2d3db50..762fe2a 100644
--- a/includes/Admin/Admin.php
+++ b/includes/Admin/Admin.php
@@ -3398,7 +3398,7 @@ class Admin {
 			<div class='kgvvm-grid'>
 				<div class='kgvvm-card'>
 					<h3><?php echo esc_html__( 'Export', KGVVM_TEXT_DOMAIN ); ?></h3>
-					<p><?php echo esc_html__( 'Exportiert alle Plugin-Tabellen (Sparten, Parzellen, Zähler, Verbrauch, Kosten, Arbeitsstunden usw.) als JSON-Datei.', KGVVM_TEXT_DOMAIN ); ?></p>
+					<p><?php echo esc_html__( 'Exportiert alle Plugin-Tabellen (Sparten, Parzellen, Zähler, Verbrauch, Kosten, Arbeitsstunden usw.) sowie die zugehörigen WordPress-Mitgliederkonten als JSON-Datei.', KGVVM_TEXT_DOMAIN ); ?></p>
 					<a href='<?php echo esc_url( wp_nonce_url( $this->admin_url( 'kgvvm-settings', array( 'kgvvm_action' => 'export_plugin_data' ) ), 'kgvvm_export_plugin_data' ) ); ?>'
 					   class='button button-secondary'>
 						<?php echo esc_html__( 'JSON-Export herunterladen', KGVVM_TEXT_DOMAIN ); ?>
diff --git a/includes/DataTransfer.php b/includes/DataTransfer.php
index 92ce0d9..4d80a7a 100644
--- a/includes/DataTransfer.php
+++ b/includes/DataTransfer.php
@@ -57,9 +57,12 @@ class DataTransfer {
 			'plugin'    => 'kgv-verein-manager',
 			'version'   => KGVVM_VERSION,
 			'exported'  => gmdate( 'Y-m-d\TH:i:s\Z' ),
+			'members'   => array(),
 			'tables'    => array(),
 		);
 
+		$payload['members'] = $this->export_members();
+
 		foreach ( self::$table_keys as $key ) {
 			$table = Schema::table( $key );
 			if ( '' === $table ) {
@@ -73,6 +76,83 @@ class DataTransfer {
 		return $payload;
 	}
 
+	/**
+	 * Export all member user accounts relevant to the plugin.
+	 *
+	 * @return array
+	 */
+	private function export_members() {
+		$ids = $this->collect_member_user_ids();
+
+		if ( empty( $ids ) ) {
+			return array(
+				'ids'      => array(),
+				'users'    => array(),
+				'usermeta' => array(),
+			);
+		}
+
+		$placeholders = implode( ', ', array_fill( 0, count( $ids ), '%d' ) );
+
+		$users_sql = "SELECT ID, user_login, user_pass, user_nicename, user_email, user_url, user_registered, user_activation_key, user_status, display_name
+			FROM {$this->wpdb->users}
+			WHERE ID IN ({$placeholders})
+			ORDER BY ID ASC";
+
+		$meta_sql = "SELECT user_id, meta_key, meta_value
+			FROM {$this->wpdb->usermeta}
+			WHERE user_id IN ({$placeholders})
+			ORDER BY user_id ASC, umeta_id ASC";
+
+		// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
+		$users = $this->wpdb->get_results( $this->wpdb->prepare( $users_sql, $ids ), ARRAY_A );
+		// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
+		$meta = $this->wpdb->get_results( $this->wpdb->prepare( $meta_sql, $ids ), ARRAY_A );
+
+		return array(
+			'ids'      => $ids,
+			'users'    => is_array( $users ) ? $users : array(),
+			'usermeta' => is_array( $meta ) ? $meta : array(),
+		);
+	}
+
+	/**
+	 * Collect all user IDs relevant for member data export.
+	 *
+	 * @return int[]
+	 */
+	private function collect_member_user_ids() {
+		$ids = array();
+
+		$member_query = new \WP_User_Query(
+			array(
+				'role'    => Roles::MEMBER_ROLE,
+				'fields'  => 'ID',
+				'number'  => 2000,
+				'orderby' => 'ID',
+				'order'   => 'ASC',
+			)
+		);
+		$ids = array_merge( $ids, (array) $member_query->get_results() );
+
+		$parcel_members_table = Schema::table( 'parcel_members' );
+		if ( '' !== $parcel_members_table ) {
+			// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared,WordPress.DB.DirectDatabaseQuery.DirectQuery
+			$ids = array_merge( $ids, (array) $this->wpdb->get_col( "SELECT DISTINCT user_id FROM {$parcel_members_table}" ) );
+		}
+
+		$work_log_members_table = Schema::table( 'work_log_members' );
+		if ( '' !== $work_log_members_table ) {
+			// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared,WordPress.DB.DirectDatabaseQuery.DirectQuery
+			$ids = array_merge( $ids, (array) $this->wpdb->get_col( "SELECT DISTINCT user_id FROM {$work_log_members_table}" ) );
+		}
+
+		$ids = array_values( array_unique( array_filter( array_map( 'absint', $ids ) ) ) );
+		sort( $ids, SORT_NUMERIC );
+
+		return $ids;
+	}
+
 	/**
 	 * Send the export as a JSON file download and exit.
 	 *
@@ -124,6 +204,18 @@ class DataTransfer {
 		$this->wpdb->query( 'SET FOREIGN_KEY_CHECKS = 0' ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
 		$this->wpdb->query( 'START TRANSACTION' ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
 
+		if ( ! empty( $payload['members'] ) && is_array( $payload['members'] ) ) {
+			$member_result = $this->import_members( $payload['members'] );
+			if ( ! empty( $member_result['errors'] ) ) {
+				$result['errors'] = array_merge( $result['errors'], $member_result['errors'] );
+				$this->wpdb->query( 'ROLLBACK' ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
+				$this->wpdb->query( 'SET FOREIGN_KEY_CHECKS = 1' ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
+				return $result;
+			}
+			$result['imported']['wp_members']     = isset( $member_result['users'] ) ? (int) $member_result['users'] : 0;
+			$result['imported']['wp_member_meta'] = isset( $member_result['meta'] ) ? (int) $member_result['meta'] : 0;
+		}
+
 		// Truncate in reverse dependency order.
 		foreach ( array_reverse( self::$table_keys ) as $key ) {
 			if ( ! isset( $payload['tables'][ $key ] ) ) {
@@ -192,4 +284,129 @@ class DataTransfer {
 
 		return $result;
 	}
+
+	/**
+	 * Import member user accounts and their usermeta.
+	 *
+	 * @param array $members Member payload from export.
+	 * @return array
+	 */
+	private function import_members( array $members ) {
+		$result = array(
+			'users'  => 0,
+			'meta'   => 0,
+			'errors' => array(),
+		);
+
+		$users = isset( $members['users'] ) && is_array( $members['users'] ) ? $members['users'] : array();
+		$meta  = isset( $members['usermeta'] ) && is_array( $members['usermeta'] ) ? $members['usermeta'] : array();
+
+		if ( empty( $users ) ) {
+			return $result;
+		}
+
+		$imported_user_ids = array();
+
+		foreach ( $users as $row ) {
+			if ( ! is_array( $row ) ) {
+				continue;
+			}
+
+			$user_id = isset( $row['ID'] ) ? absint( $row['ID'] ) : 0;
+			$login   = isset( $row['user_login'] ) ? sanitize_user( (string) $row['user_login'], true ) : '';
+			$email   = isset( $row['user_email'] ) ? sanitize_email( (string) $row['user_email'] ) : '';
+
+			if ( $user_id < 1 || '' === $login || '' === $email ) {
+				continue;
+			}
+
+			$data = array(
+				'user_login'          => $login,
+				'user_pass'           => isset( $row['user_pass'] ) ? (string) $row['user_pass'] : '',
+				'user_nicename'       => isset( $row['user_nicename'] ) ? sanitize_title( (string) $row['user_nicename'] ) : sanitize_title( $login ),
+				'user_email'          => $email,
+				'user_url'            => isset( $row['user_url'] ) ? esc_url_raw( (string) $row['user_url'] ) : '',
+				'user_registered'     => isset( $row['user_registered'] ) ? (string) $row['user_registered'] : current_time( 'mysql', true ),
+				'user_activation_key' => isset( $row['user_activation_key'] ) ? (string) $row['user_activation_key'] : '',
+				'user_status'         => isset( $row['user_status'] ) ? (int) $row['user_status'] : 0,
+				'display_name'        => isset( $row['display_name'] ) ? sanitize_text_field( (string) $row['display_name'] ) : $login,
+			);
+
+			$exists = (int) $this->wpdb->get_var( $this->wpdb->prepare( "SELECT COUNT(*) FROM {$this->wpdb->users} WHERE ID = %d", $user_id ) ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
+
+			if ( $exists > 0 ) {
+				$updated = $this->wpdb->update( $this->wpdb->users, $data, array( 'ID' => $user_id ) );
+				if ( false === $updated ) {
+					$result['errors'][] = sprintf(
+						/* translators: %d: user id */
+						__( 'Mitglied mit ID %d konnte nicht aktualisiert werden.', KGVVM_TEXT_DOMAIN ),
+						$user_id
+					);
+					continue;
+				}
+			} else {
+				$insert_data       = $data;
+				$insert_data['ID'] = $user_id;
+				$inserted          = $this->wpdb->insert( $this->wpdb->users, $insert_data );
+				if ( false === $inserted ) {
+					$result['errors'][] = sprintf(
+						/* translators: 1: user id 2: DB error */
+						__( 'Mitglied mit ID %1$d konnte nicht angelegt werden: %2$s', KGVVM_TEXT_DOMAIN ),
+						$user_id,
+						(string) $this->wpdb->last_error
+					);
+					continue;
+				}
+			}
+
+			$imported_user_ids[] = $user_id;
+			$result['users']++;
+		}
+
+		$imported_user_ids = array_values( array_unique( array_filter( array_map( 'absint', $imported_user_ids ) ) ) );
+
+		if ( empty( $imported_user_ids ) || empty( $meta ) ) {
+			return $result;
+		}
+
+		$placeholders = implode( ', ', array_fill( 0, count( $imported_user_ids ), '%d' ) );
+		$delete_sql   = "DELETE FROM {$this->wpdb->usermeta} WHERE user_id IN ({$placeholders})";
+		// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
+		$this->wpdb->query( $this->wpdb->prepare( $delete_sql, $imported_user_ids ) );
+
+		$allowed_ids = array_flip( $imported_user_ids );
+
+		foreach ( $meta as $row ) {
+			if ( ! is_array( $row ) ) {
+				continue;
+			}
+
+			$user_id = isset( $row['user_id'] ) ? absint( $row['user_id'] ) : 0;
+			if ( $user_id < 1 || ! isset( $allowed_ids[ $user_id ] ) ) {
+				continue;
+			}
+
+			$meta_key = isset( $row['meta_key'] ) ? (string) $row['meta_key'] : '';
+			if ( '' === $meta_key ) {
+				continue;
+			}
+
+			$meta_value = isset( $row['meta_value'] ) ? maybe_serialize( maybe_unserialize( $row['meta_value'] ) ) : '';
+
+			$inserted = $this->wpdb->insert(
+				$this->wpdb->usermeta,
+				array(
+					'user_id'    => $user_id,
+					'meta_key'   => $meta_key,
+					'meta_value' => $meta_value,
+				)
+			);
+
+			if ( false !== $inserted ) {
+				$result['meta']++;
+			}
+		}
+
+		return $result;
+	}
 }